Furnace Installation in Buffalo, WY
A new furnace here will run from September through June every year. Tell us about the house, and a licensed contractor who covers Johnson County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heating in Johnson County
A furnace here runs from September through June. That's ten months of the year, with winter nights averaging 14°F. Whatever you install has to hold up to a long, cold season, not just a few hard weeks.
55.8 percent of homes here heat with gas, and any non-weatherized gas furnace built since November 2015 has to reach at least 80 percent AFUE. The area has seen 84 winter storms over the last ten years, so a furnace that starts reliably after a cold night matters as much as one that runs efficiently.
- 10 months
- September through June, your furnace is on duty
- 14°F
- the average winter night it heats against
- 56%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $130 a year to run in Johnson County compared with a gas furnace.
Estimates for a typical Johnson County home, from EIA household energy data, Wyoming fuel prices and NOAA climate normals. Your home will differ.
- What size furnace does my house need?
- A contractor has to calculate this room by room, since square footage alone does not tell you enough. They will look at your insulation, your windows, your ceiling height, and how the house is laid out before running a load calculation. A furnace that is too big will short cycle and wear out faster. One that is too small will run constantly through a Buffalo winter and still not keep up when it drops to 14 degrees.
- How do I know it's time to replace my furnace?
- Watch for uneven heat between rooms, a furnace that runs longer than it used to, or a rise in your gas bill without a reason. If you're needing a repair every winter, or the repair costs are creeping close to what a new furnace would run, replacement usually makes more sense than another patch job. A contractor can also tell you how much life is left in the unit based on its age and condition. With heat needed here from September through June, a furnace that's failing has very little time of year to rest and hide the problem.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what furnace you have now. High-efficiency furnaces condense the exhaust to pull more heat out of the same gas, so less of what you pay for goes out the vent. Every non-weatherized gas furnace sold since November 2015 has to hit at least 80 percent AFUE, so the real question is whether a higher-efficiency model is worth the difference. Gas is what most homes here heat with, and with furnaces running nearly ten months of the year, the fuel savings have more months to add up than they would somewhere with a short winter. A contractor can walk through the actual models and what each would cost installed.


